Ebay Coilover Spring Swap

[Matt]

But if you use just a higher lb rated spring, no helper, then should be able to go low?

I'm currently running ta technix with standard spring and helper
Wound all the way down and I'm sat about 65mm
Ideally taking the helper out will let mE go down to 120mm on the front.
So get an extra 55mm out of the helper.
So say new springs raise the car by say 20-30mm with no helper I should still be able to achieve 90-100mm?
But tbf I drive round at 60mm I'd only go lower for shows, as I have an epic speed bump at the end of my road haha.

So standard spring 6" long 200lb
New spring 6" long 300lb

How much of a raise would we estimate with the new ones?